diff --git a/SynchronizedPDS/pom.xml b/SynchronizedPDS/pom.xml
index 22f4a818..7c6722e5 100644
--- a/SynchronizedPDS/pom.xml
+++ b/SynchronizedPDS/pom.xml
@@ -45,7 +45,7 @@
 		<dependency>
 		    <groupId>org.slf4j</groupId>
 		    <artifactId>slf4j-api</artifactId>
-		    <version>1.7.30</version>
+		    <version>1.7.31</version>
 		</dependency>
 		<dependency>
 		    <groupId>org.slf4j</groupId>
diff --git a/boomerangPDS/pom.xml b/boomerangPDS/pom.xml
index 4d4615ae..748e378b 100644
--- a/boomerangPDS/pom.xml
+++ b/boomerangPDS/pom.xml
@@ -71,7 +71,7 @@
 		<dependency>
 		    <groupId>org.slf4j</groupId>
 		    <artifactId>slf4j-api</artifactId>
-		    <version>1.7.30</version>
+		    <version>1.7.31</version>
 		</dependency>		
 		<dependency>
 		    <groupId>org.slf4j</groupId>
diff --git a/idealPDS/pom.xml b/idealPDS/pom.xml
index ad6790da..39997232 100644
--- a/idealPDS/pom.xml
+++ b/idealPDS/pom.xml
@@ -65,7 +65,7 @@
         <dependency>
 		    <groupId>org.slf4j</groupId>
 		    <artifactId>slf4j-api</artifactId>
-		    <version>1.7.30</version>
+		    <version>1.7.31</version>
 		</dependency>		
 		<dependency>
 		    <groupId>org.slf4j</groupId>